<template>
  <div>
    <el-table :data="value" border size="mini" style="width: 100%">
      <template v-for="(col, idx) in column">
        <el-table-column :key="col.label + idx" :label="col.label">
          <template slot-scope="scope">
            <el-input
              size="mini"
              :value="scope.row[col.key] || ''"
              @input="n => ((scope.row[col.key] = n), onInput(scope.row))"
            />
          </template>
        </el-table-column>
      </template>
      <el-table-column
        min-width="35"
        align="center"
        fixed="right"
        :label="$t('操作')"
      >
        <template slot-scope="scope">
          <i class="el-icon-delete" @click="del(scope.$index)" />
        </template>
      </el-table-column>
    </el-table>
    <el-button type="text" icon="el-icon-plus" @click="add">添加</el-button>
  </div>
</template>

<script>
export default {
  name: 'TableOptions',
  props: {
    value: [Object, Array, String]
  },
  data() {
    return {
      column: [
        { label: 'label', key: 'label' },
        { label: 'value', key: 'value' }
      ]
    }
  },
  created() {
    if (!Array.isArray(this.value)) {
      this.$emit('input', [])
    }
  },
  methods: {
    onInput(item) {
      if (item.label && item.value) {
        this.input()
      }
    },
    input() {
      this.$emit('input', this.value)
    },
    add() {
      this.value.push(
        this.column.reduce((initial, v) => {
          initial[v.key] = ''
          return initial
        }, {})
      )
    },
    del(idx) {
      this.value.splice(idx, 1)
      this.input(this.value)
    }
  }
}
</script>

<style scoped></style>
